Manley Street Flo valves are excellent-quality valves at an affordable price. All are made from stainless steel (intakes are NK-841; exhausts are XH-424) with chrome stems and hardened valve tips. Street Flo series valves are fully machined and swirl polished, and both the materials used and the heat-treating process are superior to those of the Budget replacement series valves. They're available in a variety of head diameters, with either straight stems or undercut "Pro Flo" stems for increased flow. Order the set that's compatible with your vehicle and engine application.

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MANLEY Valve, Severe Duty, Intake, 2.3 in. Head Dia, 0.3415 in. Stem Dia, 5.494 in. Length, Set of 8

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MANLEY Valve, Race Master, Intake, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.494 in. Length, BBC, Set of 8

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MANLEY Valve, Race Master, Intake, 2.19 in. Head Dia, 0.3415 in. Stem Dia, 5.244 in. Length, For Ford 351C, Each

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MANLEY Valve, Street Flo, Exhaust, 1.88 in. Head Dia, 0.3715 in. Stem Dia, 5.35 in. Length, BBC, Each

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MANLEY Valve, Pro Flo, Intake, 2.065 in. Head Dia, 0.372 in. Stem Dia, 5.218 in. Length, BBC, Set of 8

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